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Electrophoretic display device and manufacturing method thereof

a display device and display technology, applied in the field of electrotrophoretic display devices, can solve the problems of degrading the reliability of the epd device and the quality of the devi

Inactive Publication Date: 2014-12-09
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The dual sealant system effectively prevents water from penetrating into the electrophoretic film, thereby enhancing the reliability and quality of the electrophoretic display device by maintaining image stability and preventing performance degradation.

Problems solved by technology

Such EPD devices have bistability, and thus can maintain the original image for a long time even when an applied voltage is removed.
Herein, since the electrophoretic film is vulnerable to water in characteristic, the EPD device is deteriorated in performance when the electrophoretic film is stained with water, and thus, reliability for the quality of the EPD device is degraded.

Method used

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  • Electrophoretic display device and manufacturing method thereof
  • Electrophoretic display device and manufacturing method thereof
  • Electrophoretic display device and manufacturing method thereof

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Embodiment Construction

[0020]Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0021]Hereinafter, an EPD device according to embodiments of the present invention will be described with reference to the accompanying drawings.

[0022]FIG. 1 is a sectional view schematically illustrating an EPD device according to an embodiment of the present invention. FIGS. 2 and 3 are sectional views schematically illustrating first and second sealants in an EPD device according to an embodiment of the present invention. FIG. 4 is a sectional view schematically illustrating an EPD device according to a modified embodiment of the present invention.

[0023]Referring to FIGS. 1 and 2, an EPD device 1 according to an embodiment of the present invention includes an electrophoretic display panel 2, a protective ...

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Abstract

Disclosed is an electrophoretic display device and manufacturing method thereof, which prevent water from penetrating into an electrophoretic film. The electrophoretic display device comprises an electrophoretic display panel comprising a substrate with a thin film transistor formed thereon, and an electrophoretic film coupled to the substrate; a protective sheet coupled to the electrophoretic film; a circuit film coupled to the substrate to be disposed at an outer side of the electrophoretic film; a first sealant formed on the substrate, for sealing a gap between the electrophoretic film and the protective sheet and a gap between the electrophoretic film and the substrate; and a second sealant sealing a gap between the substrate and the circuit film.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of the Korean Patent Application No. 10-2010-0123727 filed on Dec. 6, 2010, which is hereby incorporated by reference as if fully set forth herein.BACKGROUND[0002]1. Field of the Disclosure[0003]The present disclosure relates to an electrophoretic display device which displays an image with electrophoresis, and a manufacturing method thereof.[0004]2. Discussion of the Related Art[0005]Electrophoretic display (EPD) devices denote devices that display an image with electrophoresis in which colored charged particles move by an electric field given from the outside. Herein, electrophoresis denotes an electrophoretic motion when an electric field is applied to electrophoretic dispersion liquid that is formed by dispersing charged particles into liquid, the charged particles moves in the liquid by Coulomb force.[0006]Such EPD devices have bistability, and thus can maintain the original image for a long time e...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G02B26/00G02B26/08G02F1/07G02F1/03G02F1/29G02F1/167G02F1/1679
CPCG02F1/1339G02F1/167G02F1/1679G02F2202/28
Inventor SONG, SANGMOOJUNG, DAESUNGSHIN, YOUNGJOON
Owner LG DISPLAY CO LTD